Flanges and Flange Blanking Plates

As we all know, pipes are usually connected by some kind of pipe fittings, which we call "flanges". However, in real life, many of us are unaware of flanges and flange blinds, and there are often mixed situations. The difference between flange and flange blind plate.

The two have different characteristics:
The normal name of flange blind plate is called flange cover, and some are called blind flange or blocked pipe. It is a flange without a hole in the middle. It is mainly used for the front end of the pipe seal and is used to seal the mouth. The seal is not ready to be opened again. The flange blind plate materials are carbon steel, alloy, stainless steel, plastic, etc. The flange blind plate has the same functions as isolation, cutting, head, and pipe cover. The separated system is generally used as a constant isolation means. The blind plate is solid with a handle. It is generally used for the general situation of the isolation system. It is more convenient to use a flanged blind plate. It needs to be separated. The end of the blind plate needs to be operated normally. , Use the throttling ring yellow, which can also be used to fill the installation gap of the blind plate on the pipeline. Flanges, also known as flanges or raised edges, are the parts that connect pipes, usually at the end of the pipe, with holes in the flange. When connecting, the two flanges need to be fastened with bolts. The flange is sealed with a gasket, which plays a sealing role, or plays a temporary role in the test. The flange is a common disc-type part in pipeline engineering. Generally speaking, flanges are used one-to-one. According to different connection methods, flanges are divided into threaded flanges, welding flanges, and clamping flanges. Low-pressure pipelines can be threaded flanges and welded flanges. Can exceed 4 kg.

The two applications are different:
(1) The application of flange, due to its good performance characteristics, is widely used in chemical, construction, petroleum, sanitation, pipeline, fire protection, and other basic projects.
(2) In the pipeline strength test or sealing test, the blind plate in the original start-up preparation stage cannot be used at the same time with the connecting equipment (such as turbines, compressors, gasifiers, reactors, etc.), and must be installed at the connection between the equipment and the pipeline. Blind plate. Various process material tubes are connected in the boundary area outside the boundary area. When the equipment stops running, a blind plate should be set at the shut-off valve.

Well, the above content is about the difference between flange and flange blind plates. I hope everyone has some understanding. After all, only through understanding can we choose the appropriate connecting pipe fittings to make the pipe connection more convenient.